NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Natural vs. Bubble Horizon LOP Plot Distribution
From: h.a.c. van Asten
Date: 2012 May 5, 11:17 -0700
From: h.a.c. van Asten
Date: 2012 May 5, 11:17 -0700
That might be the reason why early PanAm Pacific Clippers 1935-1940 had bubble sextants , and additionally marine sextants on board , not as a backup against mechanical failure of the bubble instruments as is sometimes stated , but for precision of observation on the natural horizon
at low flying altitudes , or from sea level if the aircraft was occasionally emergency landed .
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------